【摘要】 合成了2种三取代Keggin结构钨硅酸盐的无机-有机杂化化合物[Na3CuL6(H2O)6][(H3SiW9Fe3(OH)3O34)2(μ-OH)3]·21H2O(1)和(Him)6[Na2(H2O)2{SiW9Al3(OH)3(H2O)2O33(μ3-O2/2)}2]·14H2O(2)(L=6-氨基己酸,im=咪唑).采用X射线单晶衍射法测定了其结构.在化合物1中,2个三取代杂多阴离子SiW9Fe3(OH2)3O10-37缩去3个水分子、共用3个氧原子(Fe—O—Fe)形成二聚杂多阴离子.通过配离子、二聚阴离子和结晶水分子之间的氢键将其连接成晶体.在化合物2中,2个三取代杂多阴离子SiW9Al3(OH2)3O10-37共用AlO6八面体的一个边形成二聚杂多阴离子.钠离子接受2个二聚体的配位形成一维链结构.更多还原

【Abstract】 Two inorganic-organic hybrids containing dimeric tri-substituted Keggin anion,[Na3CuL6(H2O)6][(H3SiW9Fe3(OH)3O34)2(μ-OH)3]·21H2O(1)and(Him)6[Na2(H2O)2{SiW9Al3(OH)3(H2O)2O33(μ3-O2/2)}2]·14H2O(2) were prepared in conventional method and their structures were determined by single-crystal X-ray diffraction technique.In 1 two tri-substituted Keggin anions SiW9Fe3 underwent a condensation process forming the dimeric anion having three Fe—O—Fe bridging bonds and hydrogen bonds fuse the anions and complex cations into three dimensional architecture.In 2 two tri-substituted Keggin anions SiW9Al3 share an edge of octahedra forming the dimeric anion.The property of substituted metal ions leads to different dimeric forms.更多还原